3a+9=-9

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Solution for 3a+9=-9 equation:



3a+9=-9
We move all terms to the left:
3a+9-(-9)=0
We add all the numbers together, and all the variables
3a+18=0
We move all terms containing a to the left, all other terms to the right
3a=-18
a=-18/3
a=-6

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